Spring-catch



P. FORG. SPRING CATCH.

(No Model.)

No. 451,473. Patent ed May 5,1891.

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i a W UNITED STATES PATENT OFFICE.

PETER FORG, OF SOMERVILLE, MASSACHUSETTS.

SPRING-CATCH.

SPECIFICATION forming part of Letters Patent No. 451,473, dated May 5, 1891.

Application filed October 9, 1890. Serial No, 367,491. (No model.)

To a/ZZ whom it may c0ncc7-n:

Be it known that I, PETER FORG,Of Somerville, county of Middlesex, State of Massachusetts, have invented an Improvement in Spring-Catches, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its object to improve the construction of spring-catches, whereby they are rendered more durable and noiseless, this latter property being essential especially when the catches are employed on pianos and other like instruments- I In accordance with my invention I have provided the shank of the bolt at each end of the spring, and preferably also outside the shell and between it and the head of the bolt, with a leather or other sound -deadening washer.

Figure 1 in longitudinal section shows a catch embodying my invention, and Fig. 2 a section in the line The cylindrical shell or case a, having the lip or flange a to be inserted in a round hole in the wood, the bolt consisting of the body I), point 12, and head Z2 and the spring 0 surrounding the bolt, are and may be of usual construction, or as represented, in United States Patent No. 256,559, granted to me. These catches are used in connection with pianos and other places where the jar of the spring is sometimes heard and is objectionable. To avoid this I apply to the bolt a leather or non-metallic washer d, which is interposed between the head and the shell,

and two other washers dd are placed on the bolt at the ends of the spring, so that the spring is seated on non-metallic seats, and hence no sound is heard as the bolt and spring move. 7

I claim l. A spring-actuated catch composed of a shell, a bolt, and a surrounding spring, and non-metallic washers at the ends of the spring, to act substantially as described. A

2. A spring-actuated catch composed of a shell, a bolt, and a surrounding spring, and non-metallic washers (Z d d surrounding the said bolt, as shown and described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

PETER Eo'Re.

Witnesses:

GEO. W. GREGORY, EDWARD F. ALLEN. 

